本文整理匯總了Golang中cmd/compile/internal/ssa.Block.Unimplementedf方法的典型用法代碼示例。如果您正苦於以下問題：Golang Block.Unimplementedf方法的具體用法？Golang Block.Unimplementedf怎麽用？Golang Block.Unimplementedf使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類cmd/compile/internal/ssa.Block的用法示例。
在下文中一共展示了Block.Unimplementedf方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。
示例1: ssaGenBlock
func ssaGenBlock(s *gc.SSAGenState, b, next *ssa.Block) {
s.SetLineno(b.Line)
switch b.Kind {
case ssa.BlockPlain, ssa.BlockCall, ssa.BlockCheck:
if b.Succs[0] != next {
p := gc.Prog(obj.AJMP)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{p, b.Succs[0]})
}
case ssa.BlockDefer:
// defer returns in rax:
// 0 if we should continue executing
// 1 if we should jump to deferreturn call
p := gc.Prog(x86.ATESTL)
p.From.Type = obj.TYPE_REG
p.From.Reg = x86.REG_AX
p.To.Type = obj.TYPE_REG
p.To.Reg = x86.REG_AX
p = gc.Prog(x86.AJNE)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{p, b.Succs[1]})
if b.Succs[0] != next {
p := gc.Prog(obj.AJMP)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{p, b.Succs[0]})
}
case ssa.BlockExit:
gc.Prog(obj.AUNDEF) // tell plive.go that we never reach here
case ssa.BlockRet:
gc.Prog(obj.ARET)
case ssa.BlockRetJmp:
p := gc.Prog(obj.AJMP)
p.To.Type = obj.TYPE_MEM
p.To.Name = obj.NAME_EXTERN
p.To.Sym = gc.Linksym(b.Aux.(*gc.Sym))
case ssa.BlockAMD64EQF:
gc.SSAGenFPJump(s, b, next, &eqfJumps)
case ssa.BlockAMD64NEF:
gc.SSAGenFPJump(s, b, next, &nefJumps)
case ssa.BlockAMD64EQ, ssa.BlockAMD64NE,
ssa.BlockAMD64LT, ssa.BlockAMD64GE,
ssa.BlockAMD64LE, ssa.BlockAMD64GT,
ssa.BlockAMD64ULT, ssa.BlockAMD64UGT,
ssa.BlockAMD64ULE, ssa.BlockAMD64UGE:
jmp := blockJump[b.Kind]
likely := b.Likely
var p *obj.Prog
switch next {
case b.Succs[0]:
p = gc.Prog(jmp.invasm)
likely *= -1
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{p, b.Succs[1]})
case b.Succs[1]:
p = gc.Prog(jmp.asm)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{p, b.Succs[0]})
default:
p = gc.Prog(jmp.asm)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{p, b.Succs[0]})
q := gc.Prog(obj.AJMP)
q.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{q, b.Succs[1]})
}
// liblink reorders the instruction stream as it sees fit.
// Pass along what we know so liblink can make use of it.
// TODO: Once we've fully switched to SSA,
// make liblink leave our output alone.
switch likely {
case ssa.BranchUnlikely:
p.From.Type = obj.TYPE_CONST
p.From.Offset = 0
case ssa.BranchLikely:
p.From.Type = obj.TYPE_CONST
p.From.Offset = 1
}
default:
b.Unimplementedf("branch not implemented: %s. Control: %s", b.LongString(), b.Control.LongString())
}
}示例2: ssaGenBlock
func ssaGenBlock(s *gc.SSAGenState, b, next *ssa.Block) {
s.SetLineno(b.Line)
switch b.Kind {
case ssa.BlockPlain, ssa.BlockCall, ssa.BlockCheck:
if b.Succs[0].Block() != next {
p := gc.Prog(obj.AJMP)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[0].Block()})
}
case ssa.BlockDefer:
// defer returns in R0:
// 0 if we should continue executing
// 1 if we should jump to deferreturn call
p := gc.Prog(arm.ACMP)
p.From.Type = obj.TYPE_CONST
p.From.Offset = 0
p.Reg = arm.REG_R0
p = gc.Prog(arm.ABNE)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[1].Block()})
if b.Succs[0].Block() != next {
p := gc.Prog(obj.AJMP)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[0].Block()})
}
case ssa.BlockExit:
gc.Prog(obj.AUNDEF) // tell plive.go that we never reach here
case ssa.BlockRet:
gc.Prog(obj.ARET)
case ssa.BlockRetJmp:
p := gc.Prog(obj.ARET)
p.To.Type = obj.TYPE_MEM
p.To.Name = obj.NAME_EXTERN
p.To.Sym = gc.Linksym(b.Aux.(*gc.Sym))
case ssa.BlockARMEQ, ssa.BlockARMNE,
ssa.BlockARMLT, ssa.BlockARMGE,
ssa.BlockARMLE, ssa.BlockARMGT,
ssa.BlockARMULT, ssa.BlockARMUGT,
ssa.BlockARMULE, ssa.BlockARMUGE:
jmp := blockJump[b.Kind]
var p *obj.Prog
switch next {
case b.Succs[0].Block():
p = gc.Prog(jmp.invasm)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[1].Block()})
case b.Succs[1].Block():
p = gc.Prog(jmp.asm)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[0].Block()})
default:
p = gc.Prog(jmp.asm)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[0].Block()})
q := gc.Prog(obj.AJMP)
q.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: q, B: b.Succs[1].Block()})
}
default:
b.Unimplementedf("branch not implemented: %s. Control: %s", b.LongString(), b.Control.LongString())
}
}